Quote:
Original release date: 09/24/2014
Last revised: 09/24/2014
Source: US-CERT/NIST
Overview
GNU Bash through 4.3 processes trailing strings after function definitions in the values of environment variables, which allows remote attackers to execute arbitrary code via a crafted environment, as demonstrated by vectors involving the ForceCommand feature in OpenSSH sshd, the mod_cgi and mod_cgid modules in the Apache HTTP Server, scripts executed by unspecified DHCP clients, and other situations in which setting the environment occurs across a privilege boundary from Bash execution.
Impact
CVSS Severity (version 2.0):
CVSS v2 Base Score: 10.0 (HIGH) (AV:N/AC:L/Au:N/C:C/I:C/A:C) (legend)
Impact Subscore: 10.0
Exploitability Subscore: 10.0
|
https://web.nvd.nist.gov/view/vuln/d...=CVE-2014-6271
This is very easy to exploit and there will be a ton of hacked webservers among other things hacked in the next few weeks due to it. If you run a seedbox with certain settings there is a good chance you are vulnerable to this, it's not just an ssh issue. Also hardware with embedded linux may have issues. Also affects DHCP/network manager in some linux installs.
Various exploits are already out there and are so easy a 5 year old could do it.
It's bad.